Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2014

Supplemental Cash Flow Elements [Abstract]

Components of Change in Other Assets and Liabilities, Net

The components of the change in other assets and liabilities, net, are as follows:

years ended December 31

(add 000)	2014			2013			2012
Other current and noncurrent assets	$	8,066		$	1,186		$	(2,354	)
Accrued salaries, benefits and payroll taxes		10,136			(4,276	)		7
Accrued insurance and other taxes		(17,641	)		421			2,274
Accrued income taxes		27,680			3,889			(13,343	)
Accrued pension, postretirement and postemployment    benefits		1,150			(4,795	)		(13,904	)
Other current and noncurrent liabilities		(10,681	)		7,373			3,836
Change in other assets and liabilities	$	18,710		$	3,798		$	(23,484	)

Schedule Of Noncash Investing And Financing Activities Table Text Block

Noncash investing and financing activities are as follows:

years ended December 31

(add 000)	2014		2013		2012
Noncash investing and financing activities:
Acquisition of assets through asset exchange	$	2,091	$	—	$	690
Acquisition of assets through capital lease	$	7,788	$	10,341	$	—
Seller financing of land purchase	$	1,500	$	—	$	—
Acquisition of TXI net assets assumed through issuances of common stock and options (See Note C)	$	2,691,986	$	—	$	—